134200-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134200-69-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,2,0 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 134200-69:
(8*1)+(7*3)+(6*4)+(5*2)+(4*0)+(3*0)+(2*6)+(1*9)=84
84 % 10 = 4
So 134200-69-4 is a valid CAS Registry Number.
134200-69-4Relevant articles and documents
Michael Reactions of α-Unsubstituted Trisubstituted 1H-Pyrroles
Lueoend, Rainer,Neier, Reinhard
, p. 91 - 102 (2007/10/02)
To obtain stable derivatives of α-unsubstituted pyrroles, the reaction of the test pyrrole 9 with a series of chalcones 14a-h were studied.Michael adducts 16b-h could be isolated.In order to synthesize coloured derivatives, the reaction of different pyrro
